See here (from NYTIMES)



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送交者: JZ 于 2005-8-08, 14:58:07:

回答: How much can it save each year assuming electricity or gas heats water now? 由 HunHunSheng 于 2005-8-08, 14:14:53:

I read it when it was published and found it by google.

http://query.nytimes.com/gst/fullpage.html?res=9802E2D61E3BF934A25753C1A9629C8B63




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